Dust-remover for tracking devices.



Patented Jan.`16,1917.

2 SHEETS- mi 1,. l

lll l ,CIT-rammenta P LUNDBERl DUST REIVIOVER FOR TRACKING DEVICES.

APPLICATION FILED AUGJ. |915.

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E. LUNDBERG. DusT ITEIvIovEIT TDR TRACKING DEI/ICES.

APPLICATION FILED 'AUG. T, IDI5.

Patented Jan. I6, 1917.

2 SHEETS- SHEET 2.

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ENDERED LUNDBEEG, OE TonoN'ro, ONTARIO, CANADA. AssIeNOR, BY DIEECT ANDv MEsNE ASSIGNMENTS, OE ONE-HALE To OTTO HIGEL COMPANY, INC., OE BUFFALO, 'NEW YORK, A CORPORATION OF NEWl YORK. AND ONE-Hanze To GEORGE P.'BRAND,

f OF NEW'YORK, N. Y.

To all 'whomz't may concern:

Be it known that I, ENDFRED LUNDBEnG,

`a citizen of the United States, residing at vToronto, in the Province of Ontario, in the lDominion. of Canada, yhave invented new ence to pneumatic tracking devices or those in which the music spools or the tracker are shifted, onefwith'relation to the other, by motor pneumatics under the control of ducts or passages which in turn are controlled directly or indirectly by lateral deviations of the music sheet, in a well known ,mannen Dust, lint and particles of paper v enter these controlling` ducts andthe valvebox or case connected therewith, sometimes clogging them to such an extent as tofinterfere with the proper action of the tracking devices. n .","i

VOne of the objects of my inventionl is the provision of simple and eective means by which such controlling ducts may be readilyA cleared of dust and other obstructions.

A further object is to so combine the device with the roll-driving means of the in-f strument that it automatically cleans such ducts whenever the usual key is shifted .to

i'e-roll the music sheet, thus always keepingI the ducts free and unobstructed and in' sui-ing'v the proper operation of the tracking mechanism at all times. y

In the accompanyingdrawings: Figure 1 isa front elevation of a tracker box and tracking device equipped with' the improved dust remover or cleaning device, showingA the position 'of the parts when the device is,

in operation, ythe mainv bellows of the instrument being -sho'wn on a relatively reduced scale.. Figs. 2 and 3 are horizontal sections on lines 2-2 and iii-3, Fig. 1. Fig.

4 is an enlarged longitudinalsection of the Specification of Letters Patent.

DUST-REMOVER FOR TRACKING DEVICES,

Patented Jamie, 1917.

, Appiication med August 7, 1915. seriai No.44,13s.

cleaning valve on lined-41, Fig. 2, showing vthe same opened to clean the controlling ducts. Fig. 5 is a transverse section on line Fig. 4. Fig. (5 is a top plan view of the body or` block of the cleaning valve. Fig. 7.is` a bottom plan' 'view of said valve. Fig; 8 is a section similar to Fig. 4, showing the valveclosed to cut off the cleanin device. v

Similar characters ot' reference indicate corresponding partsthroughout the several views.V v p 1 indicates the side walls of the usual tracker box and 2 the tracker which, in the example of the invention shown in the drawings, is fixed 'and provided with the customary row of note ducts 3 and at one or both ends of said row with one or more controlling ducts4 adapted to be covered or uncovered by the margins of the music sheet l5 or controlled by an equivalent part or parts. The end ducts 4. control 'any suitable 'or well known mechanism by which the music sheet is automatically returned to its proper tracking position the moment it tends to deviate from its true course. In the example shownfin the drawings, this mecha-` nism isof the well-known type comprising aj pair of oppositely-acting motor pneumatics 6 which shift the music roll 7 axially in one or the other direction. l

8 and 9 indicate the tubes which lead from the controlling ducts 4 to any suitable or customary valve mechanism Which'controls the inflation and deflation of said motor pneumatics in a 'well-known manner. ThisA valve mechanism is well 'understood by those skilled in 'the art and is therefore not-illustrated inthe drawings. In the construction shown, it is inclosed infthe box or case 10, to opposite sides of which they inner fixed boards of the motor pneumatics are secured. i l

Their movable boards are coupled together by the usual link 11.

.In the example herein 4illust rated,wthe shaft 12 which drives the .music roll is free to slide lengthwise in its bearing in the tracker box, the opposite end of the music roll being carried by the usual springpresse'd bearing pin or stud 13. Bearing against the free end ofthe shaft 12 is a shifting arm 1,4 which is secured to an upis shifted in one or the other direction by the collapse of the motor pneumatics, in -an y l@bancus manner.

i The mechanism for Ialternately drivingthe usual take-up roll and the music roll 7 may ,be of any desired or lwellknolwn construction. That shown in the drawings is of the'co'rnmon form comprising themain driving Shaft 21, constantly turning in the same direction; the chain 22 and sprockets 23 and 24 connecting the music roll shaft 'with said main shaft; and the driving shaft 25 of the take-up roll having the gear wheel 26 adapted to be engaged by the pinion 27 carried-'' by the clutch collar 28. The collar is splined on the main shaft and has the f usualclutch-pin or pins 29 adapted to engage similar pins 30 on the sprocket 23 L) lwhich is loosely journaled on themain shaft in a Well known manner.. The clutch collar 28 is shifted by an arm 3l secured to a vertical rock shaft 32 carrying an' actuating arm 33. The latter is connected to a horizontal slide 34 journaled in the base ofthe tracker box and having a finger piece or key 35 for shifting it. This roll-winding and rewinding mechanism' operates in the customary manner, the music sheet being o wound upon the take-up roll when. the pinion 27 is moved into gear with the gear Wheel 26, and the sheet beingrewound upon the music roll when said pinionI is withdrawn and the clutch collar 28 moved into engagement with the loose sprocket wheel 23, as shown in Fig. 1.

In its preferred embodiment illustrated in the drawings, .the improved duct-cleaning device comprises a block 36 containing in its lower portion a 'wind or suction passage or chamber 37 connected by a tube 38 with a suitable exhaust or windinducing device, chamber or conduit, such as the 4usual main suction bellows 39 of `the instrument, whereby ,saidpassage is constantly exhausted so long as the main bellows is actuated. Arranged above the passage 37 is a longitudinal groove or guideway 40 the bottom of' which forms a seat for a valve 41, preferably of the sliding type, as shown. Extending 'upwardly from the passage 37 to said valve seat are ports 42 corresponding in number to the number of controlling ducts/1. Located at one side of each of these ports is a similar port 43 which is connected by a.

, branch tubeh44'with the `main tube 8 or 9 of one of said "'ontrolling ducts, there being a Y pair off'such coperarting ports 42 and 43 for each controlling duct. The slide valve Lemma verse channels or ports 45, each adapted to bridge and connect a pair of the ports 42, 43 when brought into register therewith, as shown in Figs. 4 and 5. Vhen the valve is moved into this open position the controlling ducts 4 are placed in communication with the suctionA passage 37, causing any dust, lint or other foreign substances lodging inthern and the valve box or case connected therewith to be withdrawn through said passage into the main bellows 39, from which the accumulations are removed from time to time. When the valve is shifted to its closed position, as shown in Fi g. 8, its ports break register with the ports 42 and 43, cutting of communication between the suction passage 37 andthe con-y ',trol'ling ports and allowing the tracker mechanism to operate in its normal manner. The valve is held down upon its seat1 by a spring 46 or other suitable means. This fiushing or cleaning device may be operated by hand, if desired7 but it is preferably combined with the roll-driving mechanism in suchv a manner that' the cleaning valve is automatically moved to its open or operative .position in the act of shifting the key 35 to rewind the music'shcet. In the example shown in the drawings, this is ac complished by connecting the cleaning valve 41 with lthe key-slide 34 by a rod 47.

By this construction and arrangement, the

'controlling ducts 4 and connecting passages are subjected to the cleaning or Bushing action of the suction current whenever a music-sheet is rewound. This renders it impossible to re-roll a sheet without simultaneously cleaning said ducts, thus maintaining the tracking device in properworking order at all-times. v

Whenthe key 35 is shifted to take up the music sheet, the cleaning .valve isl at the same time closed, cutting outthe cleaning device while the instrument is playing. While affording this important advantage, the improvement is exceedingly simple in construction, its cost is but nominal and it can'bc readily applied to existing as well as new tracking devices ofthis kind.'

In the drawings', the improvement is shown as applied to a' tracker having two controlling ducts, one ear each edge of the music sheet, but'the improvement is equally applicable to trackers havin?t a pair of such ductsnear each end thereo or a different number, the cleaning valve being provided with as many sets of ports 42, 43 and 45 as there are controlling ducts.

The construction of. the device may be changed or modified Within the scope 'of the appended claims withoutl departing from the.

41 is provided in its underside with transscribed.

misses I claim as my invention:

l. combination with a tracking device for a music sheet, including shifting means for maintaining proper registration between the sheet and the tracker and a con trolling duct i'or said shifting means, oif cleaning means for said duct, comprising a wind-inducing device and means for establishing or cutting off communication between said duct and said wind-inducing device.

2. The combination with'a tracking device for a music sheet, including shifting means or maintaining proper registration between the sheet and the tracker and a controlling duct for said shifting means, of cleaning means for said duct, comprising a suction device, and a valve-controlled connection between said suction device and said controlling duct.

The combination of a tracker, music and take-up rolls, mechanism for alternately driving said rolls to wind a. sheet upon the takenp roll and vrewindit upon the music roll, controlling means for said driving mechanism, a tracking device for the music sheet including shifting-means for main- 'tainingyproper registration. between the y take-up roll and rewind. it upon the music sheet and the tracker and controlling duct for said shifting'mea'ns," and a pneumatic cleaning device connected with said duct and controlled by said controlling means. 4

4. The `combination of a. tracker, music and takeaip rolls, mechanism for alternately driving saidrolls to wind a sheet upon the' take/up roll and rewind it upon the music roll, controlling means :for said driving mechanism, a tracking device yfor the music sheet including shitting means for maintaining proper registration between the sheet and the tracker and a controlling duct for said shifting means, and a suction de vice connected with said duct and controlled by said controlling means.

5. The combination of a tracker, music and take-up rolls, mechanism for. alternately driving said rolls to wind a. sheet upon' the roll, controlling means for said driving mechanism, a tracking device for the music sheet including shifting means for maintaining proper registrationy between they sheet and the trackerjand a controlling duct for said shifting means, a suction chamber.

a connection between said chamber and said duct, and a valve controlling said connection and operatively connected with said controlling means to establish 4'comnriunication between said gluctrand said chamber when the driving iiicchai'iism is shifted yto rewind the music sheet. '6. The combination With a rtracking device 'or a music sheet, including shifting means for maintaining proper registration between the sheet and the tracker, a controlling-duct for said shitting means and a main tracker tube leading from said duct to said shifting means, of a suction device, abranchtube leading from said suction device to said 'main tube, and a valve controlling com- 70 munication between said suction' device and said hranch-tube.

rlhe combination with'a tracking device `for a music sheet, including shifting means 4for maintaining proper registration 75 between the sheet and the tracker and a controlling-duct for said shifting means, of cleaning means i'or said duct, comprising a block having a wind-passage, a valve-seat,

a pair ot ports. one leading from said pas` cage to said seat and the" other communicating with said controlling duct and terminating at said scat, and a valve applied to said seat and having a channel larranged to register with and connect'said pair of ports 85 in one position ot' the valve andto break register with said ports inn another position of the A`valve. f

'8. The combination of a tracker, music and takeai'p rolls. mechanism for'alternatelyy 90 driving said rolls to wind a sheet upon the takenip roll and rewind it upon the music roll', controlling y means for said driving mechanism7 a trackingl device for the music sheet including shifting means for maintaining proper registration between the sheet `and the "tracker anda controlling duct vtor said s hiitinglmeans, a block having a wind-passage, a 'valve seat, .a pair of aorte,

one leading :trom said passage to sai seat and the other conumuucating with said controlling duct and terminating at said scat, and a valve applied to said seat and having a channel arranged to connect said pair of ports, and connecting means between said between the sheet and the tracker and a controlling-chiot for said shifting means, of cleaning vine-ans tor said duct comprising a hloc'k having a longitudinal suction passage. a valve seat, a. pair of ports, one leadingfrom said passage to said seat and the other connected 'with said controlling duct andterminating at said seat at one side of the first-named port. a slide-valve applied to said seat and having a transverse channel a rranged lo bridge and connect said pair 12o ol ports. and means oroperating said valve.

ltNl )FRED EUNDBERG. lWitnesses lil. MQ Cmus'rMAN, OTTO Hmm.. 

